CN103272338B - Radiotherapy equipment and there is the radiotherapy system of this radiotherapy equipment - Google Patents
Radiotherapy equipment and there is the radiotherapy system of this radiotherapy equipment Download PDFInfo
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- CN103272338B CN103272338B CN201310187912.XA CN201310187912A CN103272338B CN 103272338 B CN103272338 B CN 103272338B CN 201310187912 A CN201310187912 A CN 201310187912A CN 103272338 B CN103272338 B CN 103272338B
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Abstract
The invention discloses a kind of radiotherapy equipment and there is the radiotherapy system of this radiotherapy equipment.This radiotherapy equipment comprises fixing board, runing rest, main collimating apparatus, radiographic source and multi-diaphragm collimator.Wherein runing rest is located on fixing board rotationally, radiographic source is located on runing rest, main collimating apparatus is located on radiographic source, multi-diaphragm collimator is arranged on fixing board, multi-diaphragm collimator comprises multiple juxtaposed vane group, each vane group includes the first and second blades, the first and second linear electric motors, second blade and the first blade are oppositely arranged, first linear electric motors are connected with the first blade to drive the first blade to move, and the second linear electric motors are connected with the second blade to drive the second blade to move.Radiotherapy equipment of the present invention adopts linear electric motors driven vane to move, and achieves the accurate control of blade velocity and position, thus improves treatment precision and therapeutic efficiency.
Description
Technical field
The present invention relates to field of medical device, especially relate to a kind of radiotherapy equipment and there is the radiotherapy system of this radiotherapy equipment.
Background technology
Intensity modulated radiation therapy technology (IntensityModulatedRadiotherapy, IMRT), its cardinal principle can be summarized as follows: the intensity being adjusted intensity device modulation Incident beams by collimating apparatus etc., realizes the dose accumulation of X ray.Its basic goal is, improves the space conformal degree of beam and tumor target, avoids critical tissue's organ simultaneously, reduces contiguous normal tissue dose.In Intensity Modulation Radiated Therapy (IMRT), crucial execution unit is multi-diaphragm collimator (Multi-leafCollimator, MLC, also known as multi-leaf optical grating, multi-leaf collimator), multi-diaphragm collimator is made up of one or more groups blade, and the mechanical motion change combination of blade changes beam shape and forms the required visual field.
T.R.Mackie proposed a kind of intensity modulated radiation therapy implementation in 1993--tomography radiotherapy system, compare conventional intensity modulated radiation therapy, the advantage of tomography radiotherapy system is, can provide more flexible and roentgen dose X distribution accurately, neoplastic conditions is applied widely, is particularly suitable for the radiation therapy of systemic tumor, complicated tumour.
But at present in tumour spiral-fault radiation therapeutic system, when thickness arranges excessive (as >=5mm), tumor target conformal degree significantly reduces, dosage distribution cannot meet clinical demand, and result for the treatment of is not good enough, when thickness arranges too small (as≤1mm), therapeutic efficiency is lower, under equal conditions, the magnetron working time increases, and reduces its serviceable life, thus indirectly adds patient burden.The problems referred to above reason is caused to be: the binary multi-diaphragm collimator that traditional spiral-fault intensity modulated radiation therapy adopts, blade is by compressed air-driven, work in switch two states, the accurate location in vane travels centre position cannot be realized, the adjustment of switching speed cannot be realized and accurately control, thus transmitted intensity modulation cannot be realized on tomography thickness direction.
Summary of the invention
The present invention is intended at least to solve one of technical matters existed in prior art.
For this reason, one object of the present invention is to propose a kind of radiotherapy equipment, and this radiotherapy equipment adopts linear electric motors driven vane to move, and achieves the accurate control of blade velocity and position, thus improves treatment precision and therapeutic efficiency.
Another object of the present invention is to propose a kind of radiation therapy system, this radiotherapy system comprises above-mentioned radiotherapy equipment, thus radiotherapy system has, and result for the treatment of is good, therapeutic efficiency advantages of higher.
The radiotherapy equipment of embodiment according to a first aspect of the present invention, this radiotherapy equipment comprises: fixing board; Runing rest, described runing rest is located on described fixing board around its central axis rotationally; Radiographic source, described radiographic source is located on described runing rest; Main collimating apparatus, described main collimating apparatus is located on described radiographic source and is modulated into fan beam for the X ray launched by described radiographic source; And multi-diaphragm collimator, described multi-diaphragm collimator is arranged on described fixing board, described multi-diaphragm collimator, described radiographic source and described main collimating apparatus are positioned at the same side of described runing rest and described radiographic source and described main collimating apparatus are positioned at the outside of described multi-diaphragm collimator in the radial direction of described runing rest, described multi-diaphragm collimator comprises multiple vane group, described multiple vane group is arranged side by side, and each described vane group includes: the first blade; First linear electric motors, described first linear electric motors are connected with described first blade to drive described first blade to move along the direction of the central axis being parallel to described runing rest; Second blade, described second blade and described first blade are oppositely arranged; Second linear electric motors, described second linear electric motors are connected with described second blade to drive described second blade to move along the direction of the central axis being parallel to described runing rest; Wherein, the actuating speed of described first linear electric motors and described second linear electric motors is adjustable with the distance changed between described first blade and described second blade.
According to the radiotherapy equipment of the embodiment of the present invention, based on the spiral-fault radiation therapeutic of thickness segmentation, can transform in conventional helical tomotherapy device.By arranging linear electric motors driven vane, transmitted intensity modulation can be carried out on tomography thickness direction, realize the thick interior spiral-fault radiation therapeutic in sublayer, and the thick spiral-fault radiation therapeutic in multiple sublayer can be carried out simultaneously, improve spiral-fault radiotherapy system dosage distribution capability, under the prerequisite ensureing treatment precision, improve therapeutic efficiency, meet the clinical demand of complicated tumor radiotherapy.
In addition, according to the radiotherapy equipment of the embodiment of the present invention, following additional technical feature can also be had:
According to one embodiment of present invention, described radiotherapy equipment also comprises the primary importance measurement mechanism for measuring described first leaf position and the second place measurement mechanism for measuring described second leaf position.
According to one embodiment of present invention, the side on described first vane thickness direction of described first blade is provided with the first boss on the surface, the opposite side on described first vane thickness direction of described first blade is provided with the first groove on the surface, and the first groove wherein on each first blade coordinates with the first boss on adjacent first blade.
According to one embodiment of present invention, the side on described second vane thickness direction of described second blade is provided with the second boss on the surface, the opposite side on described second vane thickness direction of described second blade is provided with the second groove on the surface, and the second groove wherein on each second blade coordinates with the second boss on second adjacent blade.
According to one embodiment of present invention, described radiotherapy equipment also comprises driven unit, and described driven unit is connected with described runing rest to drive described runing rest to rotate.
According to one embodiment of present invention, described driven unit comprises motor and is connected with the output terminal of described motor and pulley transmission mechanism for driving described runing rest to rotate.
According to one embodiment of present invention, described driven unit comprises motor and is connected with the output terminal of described motor and a pair gear pair for driving described runing rest to rotate.
According to one embodiment of present invention, described first blade is made up of the wherein a kind of material in tungsten, tungalloy, lead or lead alloy, and described second blade is made up of the wherein a kind of material in tungsten, tungalloy, lead or lead alloy.
According to some embodiments of the present invention, described first linear electric motors are removably connected with described first blade or integrally welded; Described second linear electric motors are removably connected with described second blade or integrally welded.
According to the radiotherapy system of this second aspect embodiment, comprising: radiotherapy equipment, described radiotherapy equipment is according to the radiotherapy equipment in the above-mentioned first aspect embodiment of the present invention; And therapeutic bed, described therapeutic bed can move top to bottom, left and right, front and rear relative to the runing rest of described radiotherapy equipment.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schematic diagram of radiotherapy system according to an embodiment of the invention;
Fig. 2 is the schematic diagram of radiotherapy system according to an embodiment of the invention, illustrated therein is runing rest, main collimating apparatus, radiographic source and multi-diaphragm collimator;
Fig. 3 is the schematic diagram of radiographic source, main collimating apparatus and multi-diaphragm collimator;
Fig. 4 is the first blade and the second blade movement rule and transmitted intensity graph of a relation in vane group;
Fig. 5 is that radiotherapy equipment realizes the schematic diagram of the thick radiotherapy in sublayer according to an embodiment of the invention;
Fig. 6 is the sectional view of the first blade or the second blade.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
Describe the radiotherapy equipment 100 according to the embodiment of the present invention below with reference to Fig. 1-Fig. 6, be used for the treatment of tumour.
Radiotherapy equipment 100 comprises fixing board 1, runing rest 2, radiographic source 6, main collimating apparatus 3 and multi-diaphragm collimator 4 according to an embodiment of the invention.
As shown in Figure 2, runing rest 2 is located on fixing board 1 around the central axis of runing rest 2 rotationally, such as runing rest 2 can rotate around its central axis in a perpendicular, ball can be provided with between runing rest 2 and fixing board 1, can reduce friction when relatively rotating between runing rest 2 and fixing board 1 like this, ball can be evenly distributed between runing rest 2 and fixing board 1 in the circumferential.Runing rest 2 is preferably formed to disc, and runing rest 2 can at the uniform velocity rotate around its central axis, certainly also variable rotation speed.
Radiographic source 6 to be located on runing rest 2 and to rotate with runing rest 2, and such as in the figure 2 example, radiographic source 6 can be fixed on the part at contiguous runing rest 2 edge, and radiographic source 6 can launch X ray.As shown in Figure 3, main collimating apparatus 3 is located on radiographic source 6 and is modulated into fan beam for the X ray launched by radiographic source 6.Main collimating apparatus 3 and radiographic source 6 can under the drive of runing rest 2 synchronous axial system.
Multi-diaphragm collimator 4 is arranged on fixing board 1, multi-diaphragm collimator 4, radiographic source 6 and main collimating apparatus 3 are positioned at the same side of runing rest 2 and radiographic source 6 and main collimating apparatus 3 are positioned at the outside of multi-diaphragm collimator 4 in the radial direction of runing rest 2, specifically, be from inside to outside multi-diaphragm collimator 4, main collimating apparatus 3 and radiographic source 6 diametrically, the X ray that radiographic source 6 sends is by being radiated on multi-diaphragm collimator 4 after the preliminary modulation of main collimating apparatus 3.
As shown in Figure 3 and Figure 5, multi-diaphragm collimator 4 comprises multiple vane group, and multiple vane group is closely arranged side by side, and such X ray can not through adjacent vane group.Such as in an example of Fig. 3, multi-diaphragm collimator 4 comprises the vane group of ten groups of close apposition.Be understandable that, the quantity of vane group is more, and result for the treatment of is relatively better, therefore the treatment precision needed for equipment can specifically set the quantity of vane group.
As shown in Figure 3 and Figure 5, each vane group includes the first blade 411, first linear electric motors 413, second blade 412 and the second linear electric motors 414.As shown in Figure 3, X ray projects to through multi-diaphragm collimator 4 the launched field shape 72 that therapeutic bed 200 projection plane obtains Strength Changes, and wherein in vane group, the change of the first blade 411 and the second blade 412 movement velocity and position can realize the change of intensity in launched field shape.
As shown in Figure 5, the length direction of the first blade 411 can be parallel to the direction of the central axis of runing rest 2, and the first blade 411 can be the blade of flat.First linear electric motors 413 are connected with the first blade 411 to drive the first blade 411 to move along the direction of the central axis being parallel to runing rest 2, that is, the first linear electric motors 413 can drive the first blade 411 to do reciprocating linear motion on the direction of central axis being parallel to runing rest 2.
As shown in Figure 5, second blade 412 and the first blade 411 are oppositely arranged, in other words, first blade 411 and the second blade 412 are relative on the direction of central axis being parallel to runing rest 2, second blade 412 can adopt identical structure with the first blade 411, and the second blade 412 can be the blade of flat.Second linear electric motors 414 are connected with the second blade 412 to drive the second blade 412 to move along the direction of the central axis being parallel to runing rest 2, that is, the second linear electric motors 414 drive the second blade 412 to do reciprocating linear motion on the direction of central axis being parallel to runing rest 2.
Need to illustrate a bit, first linear electric motors 413 and the second linear electric motors 414 can be common linear electric motors, the output shaft of these linear electric motors can linearly stretch, thus drive the linearly to-and-fro movement of coupled parts, structure and principle of work etc. about linear electric motors have been prior art all, and known by those of ordinary skill in the field, therefore no longer describe in detail here.
Wherein, the actuating speed of the first linear electric motors 413 and the second linear electric motors 414 is adjustable with the distance changed between the first blade 411 and the second blade 412.Here, " actuating speed " refers to the first linear electric motors 413 and drives the speed of the first blade 411 and the second linear electric motors 414 to drive the speed of the second blade 412.Because the actuating speed of the first linear electric motors 413 and the second linear electric motors 414 is variable, therefore the accurate control of the first blade 411 and the second blade 412 speed, position is achieved, such first blade 411 and the second blade 412 equidirectional mobile time, by controlling the actuating speed of the first linear electric motors 413 and the second linear electric motors 414, thus the position of the distance indirectly controlled between the first blade 411 and the second blade 412 and these two blades, and then on tomography thickness direction, realize the modulation of transmitted intensity, obtain good result for the treatment of.
Wherein, as shown in Figure 4, curve 81 schematically shows the characteristics of motion of the first blade 411, curve 82 schematically shows the characteristics of motion of the second blade 412, two intersection points of curve 81 and curve 82 are respectively reference position and the final position of the first blade 411 and the motion of the second blade 412, when first blade 411 and the second blade 412 move, the change of its speed and position defines the transmitted intensity change on thickness direction, as shown in curve 83, curve 83 is divided into 10 deciles, it is thick that every part of width is sublayer, in sublayer, thick middle transmitted intensity does homogenization calculating, thus the thick transmitted intensity column diagram in discrete sublayer can be obtained, as shown in Figure 4.
Wherein, as shown in Figure 5, label A schematically shows oncotherapy volume, B schematically shows thickness, adopt radiotherapy equipment 100 according to an embodiment of the invention can realize the Further Division of thickness B, such as can form the intensity modulated of 10 equimolecular thickness shown in Fig. 5, the intensity modulated effect utilizing this sublayer thick can realize the thick interior spiral-fault radiation therapeutic in sublayer.
Such as, to treat the tumour that a longitudinal length (being parallel to the direction of the central axis of runing rest 2) is 20cm, adopt traditional therapeutic modality (with air driven leaf switch), first in described longitudinal direction, tumour should be divided into multilayer, in order to improve result for the treatment of, thickness should be as far as possible little, take thickness as 1mm be example, this tumour is needed to be divided into 200 layers, like this when to every one deck radiotherapy, runing rest 2 all will rotate a circle and namely rotate 360 °, if by complete for whole tumour radiotherapy, runing rest 2 is needed to drive radiographic source 6, main collimating apparatus 3 and multi-diaphragm collimator 4 rotate 200 circles, not only treatment time is long, simultaneously to a certain extent due to radiographic source 6, the long-time continuous firing of main collimating apparatus 3 and multi-diaphragm collimator 4 and cause service life reduction, indirectly add the treatment cost of patient.
Comparatively speaking, when to adopt radiotherapy equipment 100 according to an embodiment of the invention to treat a length be the tumour of 20cm, first also in the vertical tumour is divided into multilayer, but because radiotherapy equipment 100 moves owing to adopting linear electric motors driven vane according to an embodiment of the invention, the accurate control to blade velocity and position can be realized, two blades (i.e. the first blade 411 and the second blade 412) in such one group are in described longitudinal direction in moving process, when can be implemented in diverse location between two blades spaced a predetermined distance, be appreciated that, this preset distance is the numerical value precomputed based on this layer of tumor shape.
Thus, when being the tumour layering of 20cm to a length, thickness can suitably strengthen, take thickness as 5mm be example, tumour is then needed to be divided into 40 layers, like this when to every one deck radiotherapy, runing rest 2 all will rotate a circle and namely rotate 360 °, if by complete for whole tumour radiotherapy, runing rest 2 is needed to drive radiographic source 6, main collimating apparatus 3 and multi-diaphragm collimator 4 rotate 40 circles, so not only shorten treatment time, also shorten radiographic source 6 simultaneously, the service time of main collimating apparatus 3 and multi-diaphragm collimator 4, increase its serviceable life, thus indirectly reduce the treatment cost of patient.
In brief, the present invention is the improvement based on the spiral-fault intensity modulated radiation therapy multi-diaphragm collimator segmented thickness, by changing the type of drive of traditional multi-diaphragm collimator Leaf, make radiotherapy equipment 100 according to an embodiment of the invention can better for spiral-fault radiation therapeutic, respective vanes is driven owing to adopting linear electric motors, thus achieve the accurate control of leaf position and speed, and then radiotherapy equipment 100 can realize transmitted intensity modulation on tomography thickness direction, thickness is carried out segmentation formation sublayer further thick, utilize this intensity modulated ability can realize the thick inside spin fault radiation therapeutic in sublayer, therapeutic efficiency is improve while guarantee treatment precision.
According to the radiotherapy equipment 100 of the embodiment of the present invention, based on the spiral-fault radiation therapeutic of thickness segmentation, can transform in conventional helical tomotherapy device 100.By arranging linear electric motors driven vane, transmitted intensity modulation can be carried out on tomography thickness direction, realize the thick interior spiral-fault radiation therapeutic in sublayer, and the thick spiral-fault radiation therapeutic in multiple sublayer can be carried out simultaneously, improve spiral-fault radiotherapy system dosage distribution capability, under the prerequisite ensureing treatment precision, improve therapeutic efficiency, meet the clinical demand of complicated tumor radiotherapy.
According to one embodiment of present invention, radiotherapy equipment 100 also comprises the primary importance measurement mechanism for measuring the first blade 411 position and the second place measurement mechanism for measuring the second blade 412 position.By arranging primary importance measurement mechanism and second place measurement mechanism, thus accurately can obtain the positional information of the first blade 411 and the second blade 412, like this by analyzing, calculating the speed that can obtain the first blade 411 and the second blade 412, so just accurately obtain speed and the positional information of the first blade 411 and the second blade 412, this information can feed back to the first linear electric motors 413 and the second linear electric motors 414, first linear electric motors 413 and the second linear electric motors 414 and drive the first blade 411 and the second blade 412 based on this information.
Be understandable that, the quantity of primary importance measurement mechanism and the quantity of the first blade 411 are one to one, and the quantity of second place measurement mechanism and the quantity of the second blade 412 are one to one.
As shown in Figure 6, the side on the first blade 411 thickness direction (left and right directions in Fig. 6) of the first blade 411 is provided with the first boss 4111 on the surface, the another side on the first blade 411 thickness direction of the first blade 411 is provided with the first groove 4112, the first groove 4112 wherein on each first blade 411 coordinates with the first boss 4111 on adjacent first blade 411, and the first boss 4111 on each first blade 411 coordinates with the first groove 4112 on adjacent first blade 411.
In other words, because vane group is close apposition, therefore multiple first blade 411 is also compact arranged, each first boss 4111 of the first blade 411 side coordinates with the first groove 4112 of another the first blade 411 of this side locates, and each first groove 4112 of the first blade 411 opposite side coordinates with the first boss 4111 of another the first blade 411 of this side and locates, such one side makes between multiple first blade 411 can close apposition, X ray can also be avoided in addition to pass between adjacent two the first blades 411, affect result for the treatment of.
Equally, as shown in Figure 6, the side on the second blade 412 thickness direction (left and right directions in Fig. 6) of the second blade 412 is provided with the second boss 4121 on the surface, the another side on the second blade 412 thickness direction of the second blade 412 is provided with the second groove 4122, the second groove 4122 wherein on each second blade 412 coordinates with the second boss 4121 on second adjacent blade 412, and the boss on each second blade 412 coordinates with the second groove 4122 on second adjacent blade 412.
In other words, because vane group is close apposition, therefore multiple second blade 412 is also compact arranged, each second boss 4121 of the second blade 412 side coordinates with the second groove 4122 of another the second blade 412 of this side locates, and each second groove 4122 of the second blade 412 opposite side coordinates with the second boss 4121 of another the second blade 412 of this side and locates, such one side makes between multiple second blade 412 can close apposition, X ray can also be avoided in addition to pass between adjacent two the second blades 412, affect result for the treatment of.
In brief, in the example depicted in fig. 6, the first blade 411 adopts identical structure with the second blade 412.
As shown in Figure 2, radiotherapy equipment 100 also comprises driven unit 5, and driven unit 5 is connected to drive runing rest 2 to rotate with runing rest 2.Such as, in one embodiment of the invention, driven unit 5 comprises motor and is connected with the output terminal of motor and pulley transmission mechanism for driving runing rest 2 to rotate.Certainly, the present invention is not limited thereto, in another embodiment of the present invention, driven unit 5 comprises motor and is connected with the output terminal of motor and a pair gear pair for driving runing rest 2 to rotate.Be understandable that, for other can realize drive runing rest 2 have mercy on its central axis rotate driven unit 5, all fall within the scope of protection of the present invention.
According to some embodiments of the present invention, the first blade 411 can be made up of the wherein a kind of material in tungsten, tungalloy, lead or lead alloy, and the second blade 412 can be made up of the wherein a kind of material in tungsten, tungalloy, lead or lead alloy.
According to some embodiments of the present invention, the first linear electric motors 413 are removably connected with the first blade 411, and the output shaft of such as the first linear electric motors 413 is connected by screw thread with the first blade 411, for convenience detach like this, is convenient to the maintenance of motor.Certainly, the present invention is not limited to this, in other embodiments of the invention, the first linear electric motors 413 and the first blade 411 integrally welded, the output shaft of such as the first linear electric motors 413 and the integrally welded structure of the first blade 411.
According to some embodiments of the present invention, the second linear electric motors 414 are removably connected with the second blade 412, and the output shaft of such as the second linear electric motors 414 is connected by screw thread with the second blade 412, for convenience detach like this, is convenient to the maintenance of motor.Certainly, the present invention is not limited to this, in other embodiments of the invention, the second linear electric motors 414 and the second blade 412 integrally welded, the output shaft of such as the second linear electric motors 414 and the integrally welded structure of the second blade 412.
According to one embodiment of present invention, as shown in Figure 3, multi-diaphragm collimator 4 can comprise cutting ferrule 71, and wherein multiple vane group juxtaposition is in this cutting ferrule 71.
Radiotherapy system according to the embodiment of the present invention is described below.
Radiotherapy system comprises radiotherapy equipment 100 and therapeutic bed 200 according to an embodiment of the invention, wherein radiotherapy equipment 100 is according to the radiotherapy equipment 100 in the above embodiment of the present invention, and therapeutic bed 200 can move top to bottom, left and right, front and rear relative to the runing rest 2 of radiotherapy equipment 100.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. a radiotherapy equipment, is characterized in that, comprising:
Fixing board;
Runing rest, described runing rest is located on described fixing board around its central axis rotationally;
Radiographic source, described radiographic source is located on described runing rest;
Main collimating apparatus, described main collimating apparatus is located on described radiographic source and is modulated into fan beam for the X ray launched by described radiographic source; And
Multi-diaphragm collimator, described multi-diaphragm collimator is arranged on described fixing board, described multi-diaphragm collimator, described radiographic source and described main collimating apparatus are positioned at the same side of described runing rest and described radiographic source and described main collimating apparatus are positioned at the outside of described multi-diaphragm collimator in the radial direction of described runing rest, described multi-diaphragm collimator comprises multiple vane group, described multiple vane group is arranged side by side, and each described vane group includes:
First blade;
First linear electric motors, described first linear electric motors are connected with described first blade to drive described first blade to move along the direction of the central axis being parallel to described runing rest;
Second blade, described second blade and described first blade are oppositely arranged;
Second linear electric motors, described second linear electric motors are connected with described second blade to drive described second blade to move along the direction of the central axis being parallel to described runing rest;
Wherein, the actuating speed of described first linear electric motors and described second linear electric motors is adjustable with the distance changed between described first blade and described second blade;
Each tumour is divided into multilayer, and every layer has multiple sublayer, and the central axial direction of described runing rest is consistent with the thickness direction of tumour, and the first blade in each described vane group and the spacing between the second blade are the thickness of at least one sublayer.
2. radiotherapy equipment according to claim 1, is characterized in that, also comprises the primary importance measurement mechanism for measuring described first leaf position and the second place measurement mechanism for measuring described second leaf position.
3. radiotherapy equipment according to claim 1, it is characterized in that, the side on described first vane thickness direction of described first blade is provided with the first boss on the surface, the opposite side on described first vane thickness direction of described first blade is provided with the first groove on the surface, and the first groove wherein on each first blade coordinates with the first boss on adjacent first blade.
4. radiotherapy equipment according to claim 1, it is characterized in that, the side on described second vane thickness direction of described second blade is provided with the second boss on the surface, the opposite side on described second vane thickness direction of described second blade is provided with the second groove on the surface, and the second groove wherein on each second blade coordinates with the second boss on second adjacent blade.
5. radiotherapy equipment according to claim 1, is characterized in that, also comprises driven unit, and described driven unit is connected with described runing rest to drive described runing rest to rotate.
6. radiotherapy equipment according to claim 5, is characterized in that, described driven unit comprises motor and is connected with the output terminal of described motor and pulley transmission mechanism for driving described runing rest to rotate.
7. radiotherapy equipment according to claim 5, is characterized in that, described driven unit comprises motor and is connected with the output terminal of described motor and a pair gear pair for driving described runing rest to rotate.
8. radiotherapy equipment according to claim 1, it is characterized in that, described first blade is made up of the wherein a kind of material in tungsten, tungalloy, lead or lead alloy, and described second blade is made up of the wherein a kind of material in tungsten, tungalloy, lead or lead alloy.
9. radiotherapy equipment according to claim 1, is characterized in that, described first linear electric motors are removably connected with described first blade or integrally welded;
Described second linear electric motors are removably connected with described second blade or integrally welded.
10. a radiotherapy system, is characterized in that, comprising:
Radiotherapy equipment, described radiotherapy equipment is the radiotherapy equipment according to any one of claim 1-9; And
Therapeutic bed, described therapeutic bed can move top to bottom, left and right, front and rear relative to the runing rest of described radiotherapy equipment.
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| CN104658629A (en) * | 2013-11-20 | 2015-05-27 | 上海联影医疗科技有限公司 | Blade driving structure and multi-blade collimator |
| CN104835547B (en) * | 2014-02-11 | 2019-11-19 | 上海联影医疗科技有限公司 | Multi-diaphragm collimator |
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